You can accomplish this by wrapping them in newspaper, bubble wrap, or even clothing like pants or sweaters. Padding the bottles will help protect them against impact and accident while in transport. Wrap bottles in plastic bags.

To ensure an alcohol bottle survives the rough handling of 2026 baggage systems, the "Gold Standard" is to use a "Wine Skin"—a specialized, bubble-lined, leak-proof sleeve that seals at the bottom. If you don't have one, the best DIY method is the "Nested Layer" technique. First, wrap the bottle tightly in a thick plastic bag (like a Ziploc) to contain any potential leaks. Next, roll the bottle inside a thick, soft item like a sweater or a pair of heavy jeans. Place the bottle in the absolute center of your suitcase, ensuring there is a "buffer zone" of at least three inches of clothing on all sides—especially the top and bottom. Never place bottles near the edges or the handle rails, as these areas take the most impact when the bag is tossed or stacked. Finally, ensure the suitcase is "tightly packed" so the bottle cannot shift during the flight; a shifting bottle is a breaking bottle.